A Brief Analysis on Forming Periods of Silurian Pools in the Tazhong A Well
- Received Date: 1996-09-01
- Publish Date: 1997-04-10
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Key words:
- Tazhong A well /
- lower sandstone member of Silurian /
- reservoir geochemistry /
- homogezatron temperature /
- hydrocarbons migration and accumulation
Abstract: The Tazhong A well is the first exploration well to find commercial oil in Silurian strata of theTarim basin. In the article a detaile reservoir geochemistry study was clone to the lower sandstone mem-ber in Silurian strata, so a biref conclusion was made on forming periods of the Silurian pool in theTazhong A well, according to the homogenization temperature of hydrocarbon inclusions and to the tec-tonic evolution and thermal evolution history. There were three periods for hydrocarbon smigration andaccu mu latio noccurred separately in the Silurian一Later Devonian, Inter Permian一Triassic and Hi-malayan period. The largest hydrocarbon accumulationoccurred in the first period, and the widely ds-tributed bitumen sandstone was formed in the end of Devoian, because of the hydrocarbon s oxidationand organism decomposition when whole strata were raised and eroded. The hydrocarbon accumuiatingscale was larger in the second period and there was water washing to a certain degree during the Hi-malayan movement.
| Citation: | Xiao Zhongyao, Zhang Shuichang, Zhao Mengjun, Zeng Qiang. A Brief Analysis on Forming Periods of Silurian Pools in the Tazhong A Well[J]. Acta Sedimentologica Sinica, 1997, 15(2): 150-154.
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